Its performance is touted as exceeding that of the Ultimate Aero, which boasted a tested top speed of 257 mph and 144 mph in 9.9 seconds on the quarter-mile, from a V-8 driveline that generated just under 1,300 horsepower.

The Tuatara is both less and more, especially more.

"We've upped the ante on all levels with the Tuatara," Shelby said, adding his new super car has more horsepower, more efficient aerodynamics, lighter overall weight and is fitted with more sophisticated electronics.